AP Bio Properties of Water

Front

Why do large bodies of water not quickly fluctuate in temperature?

Back

Water has a high heat capacity.

Front

Why does ice float on liquid water?

Back

less dense

Front

What makes a molecule polar?

Back

Unequal sharing of valence electrons

Front

Why is water an excellent solvent?

Back

As a polar molecule, it can surround and dissolve ionic and polar molecules.

Front

The partial negative charge at one end of a water molecule is attracted to a partial positive charge of another water molecule. What is this type of attraction called?

Back

a hydrogen bond

Front

Why can small insects walk across the surface of calm water?

Back

The insects are light enough so that they do not break the hydrogen bonds holding the water molecules together.

Front

What process helped white carnations turn blue when placed in water with blue dye?

Back

Cohesion and adhesion of water molecules 

Front

Which property of water makes it good at regulating temperature? Options: Water is a good solvent., Water exhibits strong cohesion., Water has an unusual crystalline structure., Water has a high capacity for heat.

Back

Water has a high capacity for heat.

Front

What might happen if water had a low specific heat instead of a high specific heat?

Back

Organisms that are sensitive to changes in temperature would die

Front

What unique property of water allows fish and aquatic plants to survive a cold winter by preventing a lake from freezing solid?

Back

Water expands and becomes less dense when it freezes.